Black Box 1-800-316-7107

Helping you is our priority at Black Box.

We're committed to providing the best customer service in the industry. We're here for you, 24/7, 365.

We'll call you

A technical expert will call you shortly.

Submit Connecting call...

Call Us

Customer Sales & Service Support

Black Box Brand Product Support

IT Services & Voice Support

Send us a FAX


130-VDC, 20/60-mA Converter, Passive Only, Standalone

Use in industrial applications where electrical interference could be a problem.


Please call 877-877-2269 for a replacement product or part.
NONE DoubleDiamond™ Warranty (Standard)

Product Features

  • Connect your Current Loop equipment to an async RS-232 device.
  • Configure this AC-powered converter to match your system's 20-, 30-, or 60-mA Current Loop interface.
  • Has built-in optical isolation on the receive pair.


With front-panel LEDs, you always know the status of your data. The easy-to-use self-test feature checks the converter's internal circuitry.

The RS-232↔Current Loop Interface-Powered Converter connects to either a modem or mux. Just flip the switch to attach a terminal or computer. Your RS-232 devices are protected from dangerous transients, too.

Tech Specs

CE Approval Yes
Interface RS-232 (DTE/DCE switch selectable) Unipolar 20/60 mA (passive) up to 130 VDC;
Operation Full- or half-duplex
Power 115/230 VAC, 60/50 Hz, 12 watts
Size 1.8"H x 5.5"W x 8.5"D (4.6 x 14 x 21.6 cm)
Weight 1.5 lb. (0.7 kg)
This product works with:
  • Category 3 Bulk Cable, 2-Pair (EYN712A)
  • Questions? Contact our FREE Tech Support.

    * Technical specification weight is the unit weight. It is not the packaged shipping weight. For shipping weight, please contact Black Box customer service at 877-877-2269.


    Double Diamond Warranty Diamond

    Double Diamond™ Warranty (Standard)

    Take the risk out of equipment purchases with the Double Diamond™ Warranty from Black Box Network Services.

    The Double Diamond Warranty is our warranty that protects your Black Box® brand products* from accidental damage, including drops, water, and power surges.

    The 130-VDC, 20/60-mA Converter, Passive Only, Standalone comes with a standard NONE warranty already included.

    During the warranty period, Black Box Network Services will repair or replace your damaged equipment within one week of receipt at NO CHARGE!*

    Plus, get an Extended Double Diamond Warranty.

    You can also extend your warranty or protect a previously purchased Black Box® brand product** for an additional year—for only 10% of the purchase price! Or, extend your coverage for a full three years for only 20% of the purchase price!

    Ordering an extended warranty is easy: When viewing a product in your shopping cart, just select the one or three years of additional coverage in the dropdown menu under “Warranty Options.” For details, contact Customer Service at 724-746-5500.

    * Warranty subject to certain exclusions and limitations ** Certain products may not be eligible.

    What’s more, we also have a 45-day return policy. Simply call Customer Service for a Return Authorization (RA) number, return your product in new condition and in the original package, and receive a full refund.